Test tube holder



FIG. 1 is an exploded perspective view of a test tube holder showing mynew design;

FIG. 2 is a perspective view of the elements of FIG. 1 in assembledrelationship;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a cross section looking in the direction of the arrows 4--4 ofFIG. 2 thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a top plan view thereof.

The ornamental design for a test tube holder, substantially as shown.